/Engine/Source/Runtime/Engine/Classes/Components/InputComponent.h
Binds a key event to a delegate function with key signature. Returned reference is only guaranteed to be valid until another input key is bound.
template<class UserClass> [FInputKeyBinding](API\Runtime\Engine\Components\FInputKeyBinding) & BindKey ( const [FKey](API\Runtime\InputCore\FKey) Key, const EInputEvent KeyEvent, UserClass * Object, typename FInputActionHandlerWithKeySignature::TMethodPtr< UserClass > Func )